Harmonic analysis and suppression of medium frequency furnace in steelwork

To resolve the harmonics pollution of medium frequency electric furnace in a steelwork, power quality monitoring is conducted for power source in steelwork and substation. By the analysis of test data, the 11th, 13th, 17th harmonic are the main reason for the pollution of power quality. The effective measures were put forward for users to prevent harmonics pollution, Effectiveness of the measures was verified by the comparison data before and after treatment.